Description:  Remote Control ON/OFF by Tuya APP or Smart Life APP at anytime from anywhere.  Total active energy kWh measure.  APP can read kWh, R.M.S current, voltage, active power(The active power current voltage only for A phase, if balance it's all the same for 3 phase).  Timer control function.  Delay time cut off function.  LCD display, Real-time display of Voltage, Current, Active Power, reactive Power, power factory ,frequence, total Energy kWh 35mm Din Rail install.  Can use same TUYA APP, compatible with other TUYA product such WIFI socket, led ,fans and so on.  Active energy accurate is class 1, IEC62053-21.  Push the button last more than 10s, the WIFI led will flash quickly, then use APP to operation.    Specification:  Meter type: DTS2387V/IFIIY;  Limits voltage range: 70%Un-120%Un;  Rate frequency: 50-60 Hz;  kWh Accuracy: Class 1;  Rated Current: 60A/80A;  MAX. START CURRENT: 20MA;  R.M.S accuracy: Class 0.5;  Normal voltage range: 90%Un-110%Un;  Pulse Frequency: 400imp/kWh;  Pulse constant: See meter;  Rate voltage: 3x120/208V, 3X220/380V, 3x230/400V, 3x240/415V;  WIFI: 802.11b/g/n .only support 2.4GHz network, not support 5GHz network;    Package included:  1 x WIFI Smart Energy Meter